CN110673815B - Bitmap display method, device, equipment and computer readable storage medium - Google Patents
Bitmap display method, device, equipment and computer readable storage medium Download PDFInfo
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- CN110673815B CN110673815B CN201910978441.1A CN201910978441A CN110673815B CN 110673815 B CN110673815 B CN 110673815B CN 201910978441 A CN201910978441 A CN 201910978441A CN 110673815 B CN110673815 B CN 110673815B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 claims abstract description 40
- 238000004590 computer program Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The application discloses a bitmap display method which is applied to U-Boot and comprises the steps of obtaining a bitmap in a preset area of a double-rate synchronous dynamic random access memory; analyzing the bitmap to obtain an analyzed bitmap; storing the resolved bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory; and outputting the parsed bitmap to the display driving device so that the display driving device outputs the parsed bitmap to the display for displaying. According to the method, the bitmap stored in the preset area of the double-rate synchronous dynamic random access memory is obtained, after the bitmap is analyzed, the analyzed bitmap is stored in the frame buffer area, and then the analyzed bitmap is output to the display driving device, so that the display driving device outputs the analyzed bitmap to the display for displaying, the required time of the whole process is 2 seconds, the execution main body is U-Boot, a kernel is not required to be guided, and the time required for displaying the bitmap is greatly shortened. The present application also provides an apparatus, device and computer-readable storage medium having the above advantages.
Description
Technical Field
The present invention relates to the field of computers, and in particular, to a bitmap display method, apparatus, device, and computer readable storage medium.
Background
Currently, when the bitmap is displayed, the bitmap is completed by a kernel of Linux. After the system is started, the kernel needs U-Boot to conduct booting, after the booting is completed, the kernel completes initialization work of MPU working environment, memory mapping, peripheral driving, file system and the like again, in the initialization process, the display is in a runaway state, so that experience of a user is poor, meanwhile, the time required from starting to bitmap display in the display mode is several seconds to tens of seconds, and the time is long.
Therefore, how to shorten the time required for bitmap display and bring a good experience to the user is a great concern to those skilled in the art.
Disclosure of Invention
The invention aims to provide a bitmap display method, a bitmap display device, bitmap display equipment and a computer readable storage medium, so that the time required by bitmap display is shortened, and the experience of a user is improved.
In order to solve the above technical problems, the present application provides a bitmap display method, applied to a U-Boot, including:
acquiring a bitmap in a preset area of the double-rate synchronous dynamic random access memory;
analyzing the bitmap to obtain an analyzed bitmap;
storing the resolved bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory;
and outputting the analyzed bitmap to a display driving device so that the display driving device outputs the analyzed bitmap to a display for display.
Optionally, before obtaining the bitmap located in the preset area of the double rate synchronous dynamic random access memory, the method further includes:
acquiring the bitmap pre-stored in a storage device;
loading the bitmap to the preset area of the double-rate synchronous dynamic random access memory.
Optionally, the storage device is any one of the following storage devices:
NAND Flash, NOR Flash, eMMC, SD card.
Optionally, the frame buffer is a high physical address area.
Optionally, the parsing the bitmap, the obtaining the parsed bitmap includes:
and analyzing the bitmap according to the bitmap information to obtain the analyzed bitmap.
The application also provides a bitmap display device, which comprises:
the first acquisition module is used for acquiring a bitmap positioned in a preset area of the double-rate synchronous dynamic random access memory;
the analyzing module is used for analyzing the bitmap to obtain an analyzed bitmap;
the storage module is used for storing the parsed bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory;
and the output module is used for outputting the analyzed bitmap to display driving equipment so that the display driving equipment outputs the analyzed bitmap to a display for displaying.
Optionally, the method further comprises:
the second acquisition module is used for acquiring the bitmap pre-stored in the storage device;
and the loading module is used for loading the bitmap to the preset area of the double-rate synchronous dynamic random access memory.
Optionally, the analyzing module is specifically configured to analyze the bitmap according to bitmap information, so as to obtain the analyzed bitmap.
The present application also provides a bitmap display device, which is characterized by comprising:
a memory for storing a computer program;
and the processor is used for realizing any one of the steps of the bitmap display method when executing the computer program.
The present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program when executed by a processor implements the steps of any of the bitmap display methods described above.
The bitmap display method provided by the application is applied to U-Boot and comprises the following steps: acquiring a bitmap in a preset area of the double-rate synchronous dynamic random access memory; analyzing the bitmap to obtain an analyzed bitmap; storing the resolved bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory; and outputting the analyzed bitmap to a display driving device so that the display driving device outputs the analyzed bitmap to a display for display.
Therefore, the bitmap display method in the application is executed by the U-Boot, the bitmap stored in the preset area of the double-rate synchronous dynamic random access memory is acquired, the bitmap is analyzed, so that an analyzed bitmap is obtained, the analyzed bitmap is stored in the frame buffer area, and then the analyzed bitmap is output to the display driving device, so that the display driving device outputs the analyzed bitmap to the display to finish the display, the time required by the whole bitmap display process is 2 seconds, the execution main body is the U-Boot, the time for guiding the kernel is not required, the time required by the bitmap display is greatly shortened, and good experience is brought to a user. In addition, the application also provides a bitmap display device, a bitmap display device and a bitmap display device with the advantages, and a computer readable storage medium.
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For a clearer description of embodiments of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description that follow are only some embodiments of the present application, and that other drawings may be obtained from these drawings by a person of ordinary skill in the art without inventive effort.
Fig. 1 is a flowchart of a bitmap display method according to an embodiment of the present application;
FIG. 2 is a flowchart of another bitmap display method according to an embodiment of the present disclosure;
fig. 3 is a block diagram of a bitmap display device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a bitmap display device according to an embodiment of the present application.
Detailed Description
In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a flowchart of a bitmap display method according to an embodiment of the present application. The method is applied to U-Boot, which is totally called Universal Boot Loader, is a Boot loader applied to an embedded system, and comprises the following steps:
step S101: and acquiring a bitmap in a preset area of the double rate synchronous dynamic random access memory.
The double rate synchronous dynamic random access memory (Double Data Rate Synchronous Dynamic Random Access Memory, abbreviated as DDR) is a synchronous dynamic random access memory with double data transmission rate, the data transmission speed is twice the system clock frequency, and the transmission performance is superior to the traditional synchronous dynamic random access memory due to the speed increase. It has a certain memory space, which can be divided into a plurality of areas.
It should be noted that, in this embodiment, the preset area is not specifically limited, and may be any storage area in the double-rate synchronous dynamic random access memory, which is guaranteed to be an area different from the frame buffer.
It should also be noted that the bitmap in the double rate synchronous dynamic random access memory is a bitmap in BGR format.
Step S102: and analyzing the bitmap to obtain an analyzed bitmap.
Specifically, the bitmap is analyzed according to the bitmap information, the analyzed bitmap is obtained, and the analyzed bitmap is a BGRA format bitmap.
It should be noted that, the bitmap information in the present application is not particularly limited, and may be determined according to circumstances. For example, the bitmap information may be a gray level of the bitmap, a length, a width of the bitmap, and the like.
Step S103: and storing the resolved bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory.
Step S104: and outputting the analyzed bitmap to a display driving device so that the display driving device outputs the analyzed bitmap to a display for display.
The bitmap display method is executed by the U-Boot, the bitmap stored in the preset area of the double-rate synchronous dynamic random access memory is acquired, the bitmap is analyzed, so that an analyzed bitmap is obtained, the analyzed bitmap is stored in a frame buffer area, and then the analyzed bitmap is output to the display driving device, so that the display driving device outputs the analyzed bitmap to the display, the display is completed, the time required by the whole bitmap display process is 2 seconds, the execution main body is the U-Boot, the time for guiding the kernel is not required, the time required by the bitmap display is greatly shortened, and good experience is brought to a user.
Preferably, in one embodiment of the present application, the frame buffer is a high physical address area, which can ensure that the frame buffer is not damaged by a subsequent program, and improves stability.
The high physical address area is an area close to the end of the storage space of the double-rate synchronous dynamic random access memory. For example, assuming that the memory space of the double rate synchronous dynamic random access memory is 512M, the memory space is divided into 10 memory areas from 0 to 512M, the first memory area corresponds to 0 to 51.2M, the second memory area corresponds to 51.2M to 102.4M, …, the tenth memory area corresponds to 460.8M to 512M, and the tenth memory area is a high physical address area.
Referring to fig. 2, fig. 2 is a flowchart of another bitmap display method according to an embodiment of the present application. The method is applied to U-Boot and comprises the following steps:
step S201: the bitmap pre-stored in the storage device is acquired.
In this embodiment, the storage device is not particularly limited, and may be used as appropriate. For example, the storage device is any one of the following storage devices: NAND Flash, NOR Flash, eMMC, SD card, etc.
Step S202: loading the bitmap to the preset area of the double-rate synchronous dynamic random access memory.
Step S203: and acquiring a bitmap in a preset area of the double rate synchronous dynamic random access memory.
Step S204: and analyzing the bitmap to obtain an analyzed bitmap.
Step S205: and storing the resolved bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory.
Step S206: and outputting the analyzed bitmap to a display driving device so that the display driving device outputs the analyzed bitmap to a display for display.
The bitmap display device provided in the embodiments of the present application is described below, and the bitmap display device described below and the bitmap display method described above may be referred to correspondingly.
Fig. 3 is a block diagram of a bitmap display device according to an embodiment of the present application, including:
a first obtaining module 100, configured to obtain a bitmap located in a preset area of the double rate synchronous dynamic random access memory;
the parsing module 200 is configured to parse the bitmap to obtain a parsed bitmap;
a saving module 300, configured to save the parsed bitmap to a frame buffer of the double-rate synchronous dynamic random access memory;
and the output module 400 is configured to output the parsed bitmap to a display driving device, so that the display driving device outputs the parsed bitmap to a display for displaying.
The bitmap display device of the present embodiment is configured to implement the foregoing bitmap display method, so that the specific embodiments in the bitmap display device may be the foregoing embodiment parts of the bitmap display method, for example, the first obtaining module 100, the analyzing module 200, the saving module 300, and the output module 400 are respectively configured to implement steps S101, S102, S103, and S104 in the foregoing bitmap display method, so that the specific embodiments thereof may refer to the descriptions of the corresponding respective part embodiments, and are not repeated herein.
The bitmap display device in the embodiment is applied to the U-Boot, the bitmap stored in the preset area of the double-rate synchronous dynamic random access memory is acquired, the bitmap is analyzed, so that an analyzed bitmap is obtained, the analyzed bitmap is stored in the frame buffer area, and then the analyzed bitmap is output to the display driving device, so that the display driving device outputs the analyzed bitmap to the display, the display is completed, the time required by the whole bitmap display process is 2 seconds, the time required by guiding the kernel is not required, the time required by the bitmap display is greatly shortened, and good experience is brought to a user.
Optionally, the graph display apparatus further includes:
the second acquisition module is used for acquiring the bitmap pre-stored in the storage device;
and the loading module is used for loading the bitmap to the preset area of the double-rate synchronous dynamic random access memory.
Preferably, in an embodiment of the present application, the parsing module 200 is specifically configured to parse the bitmap according to bitmap information, to obtain the parsed bitmap.
The bitmap display device provided in the embodiments of the present application is described below, and the bitmap display device described below and the bitmap display method described above may be referred to correspondingly to each other.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a bitmap display device according to an embodiment of the present application, including:
a memory 11 for storing a computer program;
a processor 12 for implementing the steps of any of the bitmap display methods described above when executing the computer program.
The bitmap display device in this embodiment parses the bitmap by acquiring the bitmap stored in the preset area of the double-rate synchronous dynamic random access memory, thereby obtaining a parsed bitmap, storing the parsed bitmap in the frame buffer area, and outputting the parsed bitmap to the display driving device, so that the display driving device outputs the parsed bitmap to the display to complete the display, the time required for the whole bitmap display process is 2 seconds, the time required for guiding the kernel is not required, the time required for displaying the bitmap is greatly shortened, and good experience is brought to the user.
The following describes a computer readable storage medium provided in an embodiment of the present application, where the computer readable storage medium described below and the bitmap display method described above may be referred to correspondingly.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of any of the bitmap display methods described above.
The computer readable storage medium in this embodiment parses the bitmap by obtaining the bitmap stored in the preset area of the double-rate synchronous dynamic random access memory, thereby obtaining a parsed bitmap, storing the parsed bitmap in the frame buffer area, and outputting the parsed bitmap to the display driving device, so that the display driving device outputs the parsed bitmap to the display, the time required for the whole bitmap display process is 2 seconds, the time required for guiding the kernel is not required, the time required for displaying the bitmap is greatly shortened, and good experience is brought to the user.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The bitmap display method, device, equipment and computer readable storage medium provided by the application are described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
Claims (10)
1. The bitmap display method is characterized by being applied to U-Boot and comprising the following steps:
acquiring a bitmap in a preset area of the double-rate synchronous dynamic random access memory;
analyzing the bitmap to obtain an analyzed bitmap;
storing the resolved bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory; the frame buffer is a region different from the preset region;
and outputting the analyzed bitmap to a display driving device so that the display driving device outputs the analyzed bitmap to a display for display.
2. The bitmap display method according to claim 1, wherein before acquiring the bitmap located in the preset area of the double rate synchronous dynamic random access memory, further comprising:
acquiring the bitmap pre-stored in a storage device;
loading the bitmap to the preset area of the double-rate synchronous dynamic random access memory.
3. The bitmap display method according to claim 2, wherein the storage device is any one of the following storage devices:
NAND Flash, NOR Flash, eMMC, SD card.
4. The bitmap display method of claim 1, wherein the frame buffer is a high physical address region.
5. The bitmap display method according to any one of claims 1 to 4, wherein said parsing the bitmap to obtain a parsed bitmap includes:
and analyzing the bitmap according to the bitmap information to obtain the analyzed bitmap.
6. A bitmap display device, comprising:
the first acquisition module is used for acquiring a bitmap positioned in a preset area of the double-rate synchronous dynamic random access memory;
the analyzing module is used for analyzing the bitmap to obtain an analyzed bitmap;
the storage module is used for storing the parsed bitmap to a frame buffer area of the double-rate synchronous dynamic random access memory; the frame buffer is a region different from the preset region;
and the output module is used for outputting the analyzed bitmap to display driving equipment so that the display driving equipment outputs the analyzed bitmap to a display for displaying.
7. The bitmap display device of claim 6, further comprising:
the second acquisition module is used for acquiring the bitmap pre-stored in the storage device;
and the loading module is used for loading the bitmap to the preset area of the double-rate synchronous dynamic random access memory.
8. The bitmap display device according to claim 6 or 7, wherein the parsing module is specifically configured to parse the bitmap according to bitmap information, so as to obtain the parsed bitmap.
9. A bitmap display device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the bitmap display method according to any one of claims 1 to 5 when executing the computer program.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the bitmap display method according to any one of claims 1 to 5.
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| CN201910978441.1A CN110673815B (en) | 2019-10-15 | 2019-10-15 | Bitmap display method, device, equipment and computer readable storage medium |
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| US6828976B2 (en) * | 2002-07-26 | 2004-12-07 | Sun Microsystems, Inc. | Method and apparatus for hardware acceleration of graphical fill in display systems |
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